My advice would be to get a Rab Ascent 500 or possibly 300 for spring/summer/autumn and supplement it with a cheap summer bag for winter. Reddit and its partners use cookies and similar technologies to provide you with a better experience. the bag won’t weigh you down on your adventures and comes with a compression stuff sack for space-saving on wild camps and multi-day expeditions, as well as a breathable mesh bag which helps the down relax during longer storage periods at home. Its superb insulation levels deliver a comfort rating of -9 degrees and a limit of -16, making it ideal for all-year camping in the UK as well as being suited to global expeditions. I've found the OEX Leviathan EV 900 sleeping bag which seems to be have good stats of having a lower comfort limit of -16c and a weight of about 1.

It lofts well (lay it out, give it a shake and give it time to expand) and it will keep you comfortably warm in minus temperatures.Hell, just head into the Lake District in mid-January and take a peek into the various tents you spot.

Whether you're just getting started or an experienced climber, whatever your adventure needs, we have the gear. You can comfortably carry it for miles on winter hikes, and you could even extend its use to winter bikepacking or fastpacking trips if you had enough room in your set-up. The 900gsm / 600 fill power duck down insulation has a hydrophobic coating that makes it very practical for winter camping - it retains its loft if it gets damp, so it still keeps you warm in cold and clammy conditions.We’ve slept in it in all weather on Dartmoor National Park (including a super chilly deep winter camp where the mercury without wind chill hit -13 degrees Celsius), and we even used it at the height of the summer on a large meet up when all other bags were taken.

When it comes to packing away, the compression stuff sack will save room in your pack until you get home, where you can switch to the breathable mesh sack to help the down decompress to maintain its performance on your next adventure. You’re then left with a mouldable pouch that you can manipulate into whatever shape you want — for conveniently fitting into any compartment in your pack. However I can't find much online about it, has anyone got or owned one before and can give their thoughts on it?The OEX Leviathan EV 900 is a 4-season down-filled mummy sleeping bag sold by UK outdoor retailers GO Outdoors, Blacks, Millets and Ultimate Outdoors.